Clean up component, add dashboard screen, update to sensible menu includes

[acetousk]

This is just because I realized that the example component could use a little bit of fixing.

It's certainly not perfect, but this change makes the app much more usable and adds a link to the site.

[jonesde]

I'm not sure about changing the Example.xml screen from tab to popup, but I'll play with that after merging. It may be difficult to navigate across Edit Example, Items, etc tabs without the tabs, ie with just the header menu or under /qapps the left screen tree. FWIW, even with the left drawer screen tree under /qapps the intent is not to rely on that for navigation.

One little detail: please sign the AUTHORS file